"Iron and its Compounds" Iron Metal Materials PPT (Elementary Substance of Iron in Lesson 1)

Description

"Iron and its Compounds" Iron Metal Materials PPT (Elementary Substance of Iron in Lesson 1)

Part One: Learning Objectives

Curriculum Standards

1. Understand the reaction of iron with certain non-metallic elements, acids and salt solutions.

2. Understand the reaction of iron with water vapor through experimental exploration.

core competencies

1. Change of concept: Know that when iron acts as a reducing agent and reacts with certain non-metallic elements, acids and salt solutions, iron reacts with weak oxidizing oxidants, and iron atoms generate +2-valent iron compounds; iron reacts with strong oxidizing agents When the oxidant reacts, the iron atoms form +3-valent iron compounds.

2. Scientific inquiry: Through the exploration of the experimental principle of the reaction between iron and water vapor, the possible products are analyzed.

Iron and its compounds PPT, part 2: preview of new knowledge

1. physical properties of metals

special reminder

The physical properties of metals have both similarities and differences. For example, the special characteristics of metals are:

(1) A few metals such as gold and copper have special colors.

(2) Except for mercury, metals are solid at room temperature.

(3) The density is quite different. Among them, the metal with the smallest density at room temperature is lithium (0.535g·cm-3), and the densest among common metals is platinum (21.45g·cm-3).

(4) Hardness varies greatly. The hardest metal is chromium (Cr), while metals such as sodium and potassium have smaller hardness.

(5) The melting and boiling points are also very different. The melting points of sodium and potassium are both lower than the boiling point of water (100°C), while the melting point of tungsten is as high as 3422°C.

2. Presence and smelting of iron

(1) Presence of iron

Iron can exist in nature in the form of ______ like iron in meteorites, but it mainly exists in ores in the form of compounds with ______ valence and ______ valence. The content of iron in the earth's crust ranks fourth after oxygen, silicon and aluminum.

(2) Smelting of iron

The earliest artificial iron smelting product discovered in our country is a copper-handled iron sword from the Qin Dynasty in the early Spring and Autumn Period unearthed in Lingtai, Gansu Province. This shows that our country has mastered iron smelting technology in the early Spring and Autumn Period. After the middle period of the Warring States Period, iron tools played a huge role in social production. The principle of industrial iron-making is to extract iron from iron ore through reduction method. The reaction principle of industrial ironmaking is ____________________________.

3. Chemical properties of iron (if you can write ionic equations, write ionic equations)

In conclusion

When Fe reacts with sufficient amounts of Cl2, KMnO4 (H+), nitric acid solution and other strong oxidants, it is oxidized to +3 valence; when Fe reacts with sufficient amounts of S, I2, Cu2+ and other weak oxidants, it is oxidized to +2 valence.

4. Experimental study on the reaction between iron and water vapor

(1) Iron does not react with cold or hot water, but it is prone to corrosion under the action of oxygen, carbon dioxide, and water vapor in the air.

(2) Experimental study on the reaction between iron and water vapor

Iron and its compounds PPT, the third part: learn and apply

1. Which of the following statements about the reaction between iron and water is incorrect ()

A. Red-hot iron can react with water vapor. Use the drainage method to collect the gas produced and ignite it. A slight "pop" sound can be heard.

B． The reaction between iron and water vapor is a redox reaction

C. At room temperature, Fe does not react with H2O, but an oxidation reaction can occur under the combined action of O2 and H2O in the air.

D． The solid product of the reaction between iron and water vapor is black FeO

2. 11.5g sodium, 9g aluminum and 28g iron were put into 200mL 1mol·L-1 hydrochloric acid respectively. The following statement is correct ()

A. Sodium reacts most violently with hydrochloric acid and produces the most gas

B． The reaction between aluminum and hydrochloric acid produces the most gas

C. Iron reacts with hydrochloric acid to produce more gas than sodium

D． The same amount of gas is produced at the end of the reaction

3. (2019•Textbook adapted question) A chemistry interest group used the device as shown in the picture to conduct an experiment on "reaction of iron and water" and to test the properties of the product. Please answer the following questions:

(1)The function of device A is_____________________________,

The chemical equation for the reaction in device B is_______________________________.

(2)The function of device D is_____________________________.

(3)The phenomenon in device E is ____________________________.

(4) In both devices A and B, the alcohol (spray) lamp at ________ should be ignited first. The operation that should be performed before lighting the alcohol lamp at E is ____________________________.

Iron and its compounds PPT, Part 4 content: Class summary

iron

React with non-metals

It reacts with a sufficient amount of Cl2 and other strong oxidants to be oxidized to +3 valence.

Reacts with sufficient amounts of S, I2 and other weak oxidants to be oxidized to +2 valence

Reacts with non-oxidizing acids (such as dilute sulfuric acid, hydrochloric acid) to be oxidized to +2 valence

Reacts with salt solution, such as Fe＋Cu2＋===Fe2＋＋Cu at high temperature

Reaction with water vapor: 3Fe+4H2O (g) ===== High temperature Fe3O4+4H2

Iron and its compounds PPT, Part 5: Qualification examination training

1. Under given conditions, the transformation between the following substances cannot be achieved ()

A. Fe��→Cl2 heats FeCl3 B. Fe��→Hydrochloric acid FeCl3 at room temperature

C. Fe��→H2O (g) High temperature Fe3O4 D. Fe��→S heats FeS

2. (2019•Textbook adapted question) Among the following substances, the one that reacts with iron under certain conditions and the valence of iron element can become +3 is ()

A. Dilute sulfuric acid B. Chlorine

C. Copper sulfate solution D. Dilute hydrochloric acid

3. Among the following reactions, the one that can displace iron is ()

A. Cu and FeSO4 (solution) B. Na and FeSO4 (solution)

C. C and Fe2O3 (high temperature) D. Ag and FeSO4 (solution)

4. (2019•Textbook Adaptation Question) Which of the following changes cannot be completed directly through a one-step reaction ()

A. Fe�→Fe3O4 B． Na�→Na2CO3

C. Na2O2�→NaOH D． Na�→Na2O2

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Update Time: 2024-11-02

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